Edinburgh Research Explorer

Barrel shifter for a microprocessor

Research output: Patent

Original languageEnglish
Patent numberUS 20050289323 A1
Publication statusPublished - 1 Dec 2005

Abstract

A 2N bit right only barrel shifter for a microprocessor comprising upper and lower N bit shifter portions. A N bit input is put in the upper portion. An X bit right shift of the N bit number yields the results in the N bit upper portion and the result of an N-X bit left shift in the lower portion. The N bit shifter is comprised of a Log2N stage multiplexer where in each successive stage of the multiplexer adds 2x additional bits where x increments from 0 to (Log2N-1).

ID: 18957842